Service DACL Modification via sc.exe
editService DACL Modification via sc.exe
editIdentifies DACL modifications to deny access to a service, making it unstoppable, or hide it from system and users.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.process-*
- logs-windows.sysmon_operational-*
- endgame-*
- logs-sentinel_one_cloud_funnel.*
- logs-m365_defender.event-*
- logs-crowdstrike.fdr*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
- https://blogs.jpcert.or.jp/en/2024/07/mirrorface-attack-against-japanese-organisations.html
- https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_sc_sdset_deny_service_access.yml
- https://learn.microsoft.com/en-us/windows/win32/secauthz/sid-strings
- https://www.sans.org/blog/red-team-tactics-hiding-windows-services/
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Resources: Investigation Guide
- Data Source: Elastic Endgame
- Data Source: Elastic Defend
- Data Source: Sysmon
- Data Source: SentinelOne
- Data Source: Microsoft Defender for Endpoint
- Data Source: Crowdstrike
Version: 204
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where host.os.type == "windows" and event.type == "start" and
(process.name : "sc.exe" or ?process.pe.original_file_name : "sc.exe") and
process.args : "sdset" and process.args : "*D;*" and
process.args : ("*;IU*", "*;SU*", "*;BA*", "*;SY*", "*;WD*")
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Hide Artifacts
- ID: T1564
- Reference URL: https://attack.mitre.org/techniques/T1564/
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: Create or Modify System Process
- ID: T1543
- Reference URL: https://attack.mitre.org/techniques/T1543/
-
Sub-technique:
- Name: Windows Service
- ID: T1543.003
- Reference URL: https://attack.mitre.org/techniques/T1543/003/